Taco Bell — owned by Yum! Brands, Inc. (NYSE:YUM) — is expanding its menu with a Naked Egg Taco. The Naked Egg Taco has the egg as the tortilla, with potatoes, cheese and bacon or sausage as filling. Taco Bell has tried everything from waffles to fried chicken as taco shells in the past, garnering some level of success with those limited-time options.